Application case 9: Special carbon calcinations control system
一、 Carbon baking prediction optimization control system
1. Overview of the roaster
The burning control system of carbon calciner is used in 1 room 16 roaster. Roaster is open ring sealing furnace, 3 gas well 3 container. According to the demand of baking process curve to the stove fire passage for heating, make the fuel (hot) gas fully burning in the flame path; So green, the baking process into baking, carbon. Built-in devices include gas burners, smoke and temperature and pressure detection, gas equipment, including manual and automatic adjustment. Each furnace chamber has three automatic burners with wind. A total of 1 set of combustion system and control system.
2. Type of gas fuel
Fuel oil; natural gas; coal bed gas; liquefied gas; acetylene; coke oven gas; heating gas (or cooling gas); methanol; petroleum coke
3. Operating mechanism of applied furnace
8 chambers, 9 chambers, 10 chambers, 11 chambers, 12 chambers
4. Temperature index of controllable technology
Detection of temperature: maximum temperature of every spot inside the high-temperature furnace: ±60℃. Maximum vertical temperature inside the furnace: ±50℃. Temperature of flame path: ±35℃.
5. Description of function
According to the demand of baking process curve to the furnace heating, assure the sufficient combustion of the fuel in the fire within the flame path
Automatic display heating amount (that is, how much for the fuel quantity), the cumulative flow, automatically adjust the fuel flow
The furnace combustion within the annular total flue waste gas discharged into the furnace (exhaust pressure provided by the tenderer)
According to the set temperature curve, the valve opens the path of the fire smoke at the mouth of the degree of adjustment to when location, provide reasonable negative pressure within the flame path to the fire
Has the function of detecting various control point temperature and the temperature signal to the central control room, for adjusting the control points of cold gas.
Heat furnace chamber and cool naturally
Implement container and product uniformity of temperature in all directions; Implement product volatile burning as much as possible
Realize the whole carbon baking production low energy consumption
Set connected cover between flame path and gas flue
二、 Structure of hardware
Using frame structure, basic technical requirements and the quantity supplied (each furnace)
1. Burning frame (fire-bridge)
Classification: the main combustion 2 sets, auxiliary combustion 1 set
The frame body 3 sets
The main combustion frame contains 2 sets
Burner of cold gas
Connecting method of burner metal hose (1500 mm, 6 strips)
Manual ball valve: 6 sets
Take dg125 flange connection metal corrugated pipe 2, ball valves for 2 sets
Three cold gas regulator, used to regulate the amount of cold gas temperature need to size, 1 meter
Secondary air distribution valve is 3 units, fan, frequency converter, flowmeter 1 (or use the manual air distribution burner)
Main pressure switch: 2 sets
Anti-back fire safety valve: 2 sets
Control cabinet: 2 sets (including two temperature inspection instruments (optional)
Thermocouple: fire way for six, two container
1 set of auxiliary combustion frame contains
Attached with air cooling gas burner 3 manually
Burner metal hose connection mode (3) of article 1500 mm
Take dg125 flange connection metal bellow: 1
The ball valve: 1
Three cold gas electric control valve, due to regulate the amount of cold gas temperature need to size
Manual valve: 3 units
Manifold pressure switch: 1
Tempering prevention safety solenoid valve: 1
Control cabinet 1 set (including 1 set temperature inspection instrument (optional)
Thermocouple: a total of four, for three fires, 1 container
2. Unicom cover (smoke) (including manual butterfly valve, etc.)
Designed by party b, party a provide drawings according to the drawing
Equipment sets, 2 sets
Thermometer: 2 –
The negative pressure gauge: 2
The flue gas temperature: ~ 700℃
Pressure measuring range: - 3000 ~ 0 pa, on-site monitoring, pressure ball valve
Note: if fully automatic, it will need 2 electric flashboard valves, 2 thermocouples; the main negative pressure table is pressure transmitter. 2 control cabinets, 2 sets of temperature inspection instrument.
3. Temperature/pressure measurement
Designed by party b, party a provide drawings according to the drawing
Number of equipment: 1 set
Thermocouple: in addition to the main combustion frame four 3 room 1 bottle each room measuring thermocouple
Bellows suction table: 3 (optional)
Temperature inspection instrument: 1 (optional)
4. Public electrical communication system
Blast, cooling rack 16 sets of power supply system
16 sets of burning aircraft power supply system
Cable trough: 100 meters
Cable: according to the actual laying length calculation
Compensation conductor: according to the actual laying length calculation
5. Control system
It consists of computer control system of the basic functions including display, storage (a year), data processing and alarm, etc. consists of instrument of the scene display systems including display, detection, alarm, etc
Features:
It can complete a variety of temperature curve when designing in order to finish baking task of different carbon block. It is convenient to select the baking temperature curve when normal automatic baking works.